late 15c., "easily taught," from Italian or French docile, from Latin docilis "easily taught," from docere "teach" (see doctor). Sense of "obedient, submissive" first recorded 1774.
例文
1. Circus monkeys are trained to be very docile and obedient.
サーカスのサルは訓練に服している.
2. " You're all so docile . You don 't put up the slightest resistance.